[x86] Fix register constraints for multiply high and modulus.

test/mjsunit/compiler/regress-register-allocator2.js

Index: test/mjsunit/compiler/regress-register-allocator2.js
diff --git a/test/mjsunit/compiler/regress-register-allocator2.js b/test/mjsunit/compiler/regress-register-allocator2.js
new file mode 100644
index 0000000000000000000000000000000000000000..06e0c49dca3985d631efef4d1799b5b7da6acc77
--- /dev/null
+++ b/test/mjsunit/compiler/regress-register-allocator2.js
@@ -0,0 +1,17 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function f() {
+  var x = 0;
+  var y = 0;
+  x ^= undefined;
+  assertEquals(x /= 1);
+  assertEquals(NaN, y %= 1);
+  assertEquals(y = 1);
+  f();
+  y = -2;
+  assertEquals(x >>= 1);
+  assertEquals(0, ((y+(y+(y+((y^(x%5))+y)))+(y+y))>>y)+y);
+}
+try { f(); } catch (e) {}